portal smile has a few elements of portal2. but, this mod was released before portal2 release. and this mod is basically use korean language but you can change subtitle as english. in console, typing "cc_lang english" . but you probably notice what they say.

It's a decent mod, there is one bug in the room where you get the blue portal gun where the orange portal in the actual test chamber isn't linked with the blue portal, instead the blue portal links with the orange portal entity outside the map.

Other than that this mod is pretty good, but I am curious what those ending title cards say, I can't read Korean so I was hoping you could tell me, I understand you aren't that good with English, but I am good with figuring out what is being said :)